246 (number)
# 246 (number)

246 (two hundred [and] forty-six) is the natural number following 245 and preceding 247.

Additionally, 246 is:

* an untouchable number.
* palindromic in bases 5 $(1441_5),$ 9 $(303_9),$ 40 $(66_{40}),$ 81 $(33_{81}),$ 122 $(22_{122})$ and 245 $(11_{245}).$
* a Harshad number in bases 2, 3, 6, 7, 9, 11 (and 15 other bases).
* the smallest number N for which it is known that there is an infinite number of prime gaps no larger than N.

Also:

* The aliquot sequence starting at 246 is: 246, 258, 270, 450, 759, 393, 135, 105, 87, 33, 15, 9, 4, 3, 1, 0.
* There are exactly 246 different rooted plane trees with eight nodes, and 246 different necklaces with seven black and seven white beads.
